Negative feedback closed loop control system has input of 10 V, forward gain of 1 and feedback gain of 3. Find the output voltage.

Correct option is A

· Negative feedback in a closed-loop reduces gain improves the bandwidth and disturbance rejection.
· Also, it reduces the sensitivity to parameter variation.
· Negative feedback in a control system reduces the overall gain.
· It reduces the sensitivity of output to input variation, distortion, and noise reduction.
Given $$x(t) = 10 \, \text{Volts}$$​​

​$$y(t) = ?, \, \text{Gain} = 3$$

$$\frac{y(t)}{x(t)} = \frac{1}{1 + 3} = \frac{1}{4}$$

$$y(t) = 10 \times \frac{1}{4} = 2.5$$​​​​